EP1174368A2 - Roof door opening and closing device for roof opening type container - Google Patents

Roof door opening and closing device for roof opening type container Download PDF

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Publication number
EP1174368A2
EP1174368A2 EP01109693A EP01109693A EP1174368A2 EP 1174368 A2 EP1174368 A2 EP 1174368A2 EP 01109693 A EP01109693 A EP 01109693A EP 01109693 A EP01109693 A EP 01109693A EP 1174368 A2 EP1174368 A2 EP 1174368A2
Authority
EP
European Patent Office
Prior art keywords
pair
roof
driving shafts
doors
container body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01109693A
Other languages
German (de)
French (fr)
Inventor
Ser Hee-Tae
Yang Keun-Je
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phinix R& D Co Ltd
Phinix R and D Co Ltd
Kia Corp
Original Assignee
Phinix R& D Co Ltd
Kia Motors Corp
Phinix R and D Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Phinix R& D Co Ltd, Kia Motors Corp, Phinix R and D Co Ltd filed Critical Phinix R& D Co Ltd
Publication of EP1174368A2 publication Critical patent/EP1174368A2/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/10—Counterbalance devices
    • E05D13/12—Counterbalance devices with springs
    • E05D13/1253—Counterbalance devices with springs with canted-coil torsion springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • B65D88/12—Large containers rigid specially adapted for transport
    • B65D88/122—Large containers rigid specially adapted for transport with access from above
    • B65D88/124—Large containers rigid specially adapted for transport with access from above closable top
    • B65D88/126—Large containers rigid specially adapted for transport with access from above closable top by rigid element, e.g. lid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00—Refuse receptacles; Accessories therefor
    • B65F1/14—Other constructional features; Accessories
    • B65F1/16—Lids or covers
    • B65F1/1623—Lids or covers with means for assisting the opening or closing thereof, e.g. springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/40—Suspension arrangements for wings supported on arms movable in vertical planes
    • E05D15/46—Suspension arrangements for wings supported on arms movable in vertical planes with two pairs of pivoted arms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
    • E05F11/02—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights
    • E05F11/04—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F17/00—Special devices for shifting a plurality of wings operated simultaneously
    • E05F17/004—Special devices for shifting a plurality of wings operated simultaneously for wings which abut when closed
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/10—Counterbalance devices
    • E05D13/12—Counterbalance devices with springs
    • E05D13/1253—Counterbalance devices with springs with canted-coil torsion springs
    • E05D13/1261—Counterbalance devices with springs with canted-coil torsion springs specially adapted for overhead wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2999/00—Subject-matter not otherwise provided for in this subclass

Definitions

  • the present invention relates to a roof opening door device, and more particularly, the present invention relates to a roof door opening and closing device for a roof opening type container used for loading freight, for example, industrial waste, which is to be transported in a closed state.
  • the waste and garbage are transported in a state wherein each of them is loaded in a roof opening type container which is capable of being opened and closed at its roof.
  • This roof opening type container is placed on transportation means such as a special vehicle or a train.
  • the conventional roof opening type container has a container body 101 which has a box-shaped configuration.
  • a pair of roof doors 102 are provided to an upper end of the container body 101 in a manner such that they can be opened and closed.
  • the pair of roof doors 102 are manually opened and closed by the medium of manipulation of a handle 103 which is arranged at a front end of the container body 101.
  • a reduction gear 105 which is disposed so as to reduce an opening and closing velocity of the pair of roof doors 102, is actuated by continuous rotation of the handle 103.
  • the reduction gear 105 transfers power which is generated by the rotation of the handle 103, through a first chain 104 and a second chain 106 to a pair of gear boxes 112, so that a velocity is reduced.
  • the pair of gear boxes 112 respectively rotate a pair of driving shafts 109 which extend in a forward and rearward direction at both sides of the container body 101.
  • Each roof door 102 is secured at one widthwise end thereof to each driving shaft 109.
  • the pair of roof doors 102 are rotated about the pair of driving shafts 109 by the medium of rotation of the pair of driving shafts 109 in a manner such that they open or close the upper end of the container body 101.
  • the conventional roof opening type container constructed as mentioned above suffers from defects in that, since power for opening and closing the pair of roof doors 102 is transferred from the handle 103 through the reduction gear 105, the first and second chains 104 and 106 and the pair of driving shafts 109 to the pair of roof doors 102, when the pair of roof doors 102 are initially opened or closed, a great deal of effort is required, and thereby the opening and closing velocity of the pair of roof doors 102 cannot but be slowed.
  • the handle 103 in order to open or close the pair of roof doors 102 through 270°, while being influenced by a diameter of sprockets which are connected with the first and second chains 104 and 106, the handle 103 must be rotated by about fifty-three revolutions.
  • each roof door 102 when the pair of roof doors 102 are opened and closed, as the center of gravity of each roof door 102 continuously moves, a play is developed in each of the first and second chains 104 and 106, whereby durability of the entire container can be impaired. Moreover, because a sudden roof door sagging phenomenon may be induced due to a self-weight of each roof door 2, the likelihood of an accident to occur is increased.
  • an object of the present invention is to provide a roof door opening and closing device for a roof opening type container, which enables a pair of roof doors to be easily and quickly opened and closed, improves safety upon opening and closing of the roof doors, and enhances durability of the roof doors.
  • a roof door opening and closing device for a roof opening type container comprising: a pair of roof doors provided to an upper end of a container body which has a box-shaped configuration, in a manner such that the pair of roof doors can open and close the upper end of the container body; a pair of first links having one ends which are pivotably connected to a pair of driving shafts respectively arranged at both sides of the container body and the other ends which are pivotably connected to the pair of roof doors; a pair of second links having one ends which are pivotably connected to two pairs of brackets each pair secured to the upper end of the container body between the pair of driving shafts and the other ends which are pivotably connected to the pair of roof doors; a reduction gear for velocity-reducing rotation force of a handle which is installed on the container body; a link mechanism for transferring the rotation force which is velocity-reduced by the reduction gear, to the pair of driving shafts which are respectively coupled with the pair of roof doors; and a plurality of first links having one ends which are pivotably connected to a pair of driving shafts
  • the link mechanism comprises a first chain which is located between the handle and the reduction gear so as to transfer the rotation force of the handle to the reduction gear, a second chain which is located between the reduction gear and the pair of driving shafts so as to transfer the rotation force velocity-reduced by the reduction gear, to the pair of driving shafts, and a pair of connection shafts which respectively connect the pair of driving shafts to the second chain.
  • each of the pair of connection shafts and each of the pair of driving shafts are connected with each other by virtue of a pair of gears.
  • the plurality of springs are installed on the pair of driving shafts and the two pairs of brackets in a manner such that the plurality of springs are freed and thereby the spring force does not act on the pair of driving shafts and the pair of second links when the pair of roof doors are opened by 270°.
  • FIG. 1 is a perspective view schematically illustrating an opening and closing structure for a roof door of a roof opening type container in accordance with an embodiment of the present invention.
  • the roof opening type container has a container body 1 which has a box-shaped configuration.
  • a pair of roof doors 2a and 2b cooperatively define a roof of the container body 1.
  • the pair of roof doors 2a and 2b are opened and closed by rotating manipulation of a handle 3 which is arranged at a side of a front end of the container body 1.
  • a first chain 4 which extends in a vertical direction, is connected to the handle 3.
  • the first chain 4 is also connected with a first gear 7a which is provided at a front end of a connection shaft 7 which is positioned at an upper end of the container body 1.
  • connection shaft 7 there are installed the first gear 7a to which the first chain 4 is connected and a second gear 7b which has a larger diameter than the first gear 7a.
  • the first gear 7a and the second gear 7b constitute a reduction gear 5 which functions to reduce a rotational velocity of the handle 3 and then transfer reduced rotational velocity to the connection shaft 7.
  • the first chain 4 is connected with the reduction gear 5 and thereby connected to a first driving shaft 9a which functions to drive a first roof door 2a.
  • the connection shaft 7 transfers rotation force of the handle 3 through a second chain 6 which is installed on the second gear 7b, to a second driving shaft 9b which functions to drive a second roof door 2b.
  • the connection shaft 7 and the pair of driving shafts 9a and 9b are connected with each other through a first gear 12a which is installed on the connection shaft 7 and a second gear 12b which is installed on each of the pair of driving shafts 9a and 9b. This is because the pair of roof doors 2a and 2b are opened and closed in opposite directions from each other.
  • the driving shaft 9a or 9b which is provided to any one of the pair of roof doors 2a and 2b, can be directly connected to the connection shaft 7.
  • the reduction gear 5 includes the first gear 7a which is connected with the first chain 4 and the second gear 7b on which the second chain 6 connected to the driving shafts 9a and 9b so as to transfer power of the handle 3 to the driving shafts 9a and 9b is installed. Since the first gear 7a is smaller than the second gear 7b, the driving shafts 9a and 9b are rotated at a velocity which is slower than that of the connection shaft 7.
  • a first link 10 is fixedly installed on each of the driving shafts 9a and 9b. That is to say, one ends of a pair of first links 10 are pivotably connected to the pair of driving shafts 9a and 9b, respectively, and the other ends of the pair of first links 10 are pivotably connected to middle portions of the pair of roof doors 2a and 2b, respectively. Further, the roof doors 2a and 2b are, as shown in FIG. 2, connected to an upper surface of the container body 1 through a pair of second links 11.
  • each second link 11 is pivotably connected to a pair of brackets 14 which are secured to the upper surface of the container body 1 between the pair of driving shafts 9a and 9b, and the other end of each second link 11 is pivotably connected to each of the pair of roof doors 2a and 2b.
  • Springs 8 which are installed on the pair of driving shafts 9a and 9b as shown in FIG. 2 and springs (not shown) which are installed on the brackets 14, act spring force on the first and second links 10 and 11. These springs are installed on the driving shafts 9a and 9b and the brackets 14 in a manner such that the springs are freed, that is, spring force of the springs does not act in any directions when the pair of roof doors 2a and 2b are opened by about 270°. Accordingly, when the pair of roof doors 2a and 2b are completely opened or closed, spring force of the springs acts on the driving shafts 9a and 9b and the brackets 14 in directions in which the pair of roof doors 2a and 2b are to be opened or closed.
  • the roof door opening and closing device for a roof opening type container is constructed as mentioned above, if the handle 3 is rotated in a left or right direction, rotation force of the handle 3 is transferred to the connection shaft 7 through the first chain 4. By this, the second chain 6 which is connected to the second gear 7b which is installed on the connection shaft 7, is driven. As described above, the connection shaft 7 is connected to the reduction gear 5 which is connected with the first driving shaft 9a, and the second chain 6 is connected to the second driving shaft 9b. Thus, the pair of driving shafts 9a and 9b are rotated by the rotation of the handle 3 so that they open or close the pair of roof doors 2a and 2b.
  • the pair of roof doors 2a and 2b are connected to the driving shafts 9a and 9b and the upper surface of the container body 1 through the first and second links 10 and 11.
  • the pair of roof doors 2a and 2b are raised upward by rotation of the driving shafts 9a and 9b.
  • the second links 11 which have one ends pivotably connected to the two pairs of brackets 14 and the other ends pivotably connected to the pair of roof doors 2a and 2b, are pivoted about the brackets 14 by rotational movement of the roof doors 2a and 2b.
  • the pair of roof doors 2a and 2b can be easily opened or closed by the aid of the springs which are mounted to the driving shafts 9a and 9b and the brackets 14.
  • the pair of roof doors 2a and 2b are opened to a predetermined height, as the pair of roof doors 2a and 2b are lowered by their self-weight, the pair of roof doors 2a and 2b are completely opened or closed.
  • the springs which are installed on the driving shafts 9a and 9b and the brackets 14 acts on the first and second links 10 and 11, force which is required for opening or closing the roof doors 2a and 2b, can be minimized.
  • the roof door opening and closing device for a roof opening type container according to the present invention provides advantages in that, since opening and closing of a pair of roof doors is aided by spring force, it is possible to easily and quickly open and close the pair of roof doors. Also, due to the fact that it is possible to prevent a play from being developed in a chain due to continuous movement of the center of gravity in each roof door, durability of the entire roof door opening and closing device can be enhanced. Further, because a sudden roof door sagging phenomenon due to a self-weight of each roof door can be avoided, the likelihood of an accident to occur is decreased.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Refuse Receptacles (AREA)

Abstract

The roof door opening and closing device for a roof opening type container comprises a pair of roof doors (2a,2b) provided to an upper end of a container body (1). The roof doors (2a,2b) can open and close the upper end of the container body. A pair of first links (10) are pivotably connected to a pair of driving shafts (9a,9b) respectively arranged at both sides of the container body (1) and the links are also pivotably connected to the roof doors. A pair of second links (11) are pivotably connected to the container body (1) and to the roof doors (2a,2b). A reduction gear for velocity-reducing rotation force of a handle (3) is installed on the container body. A link mechanism transfers the rotation force to the pair of driving shafts which are respectively coupled with the pair of roof doors (2a,2b). A plurality of springs (8) act on the pair of driving shafts (9a,9b) and the pair of second links (11) when the pair of roof doors (2a,2b) are completely opened or closed.

Description

    BACKGROUND OF THE INVENTION Field of the Invention
  • The present invention relates to a roof opening door device, and more particularly, the present invention relates to a roof door opening and closing device for a roof opening type container used for loading freight, for example, industrial waste, which is to be transported in a closed state.
    • Description of the Related Art
  • Generally, when transporting special waste such as industrial waste, or home garbage, in order to prevent the waste or garbage from falling down onto road or the like, the waste and garbage are transported in a state wherein each of them is loaded in a roof opening type container which is capable of being opened and closed at its roof. This roof opening type container is placed on transportation means such as a special vehicle or a train.
  • Referring to FIG. 3, there is shown a schematic perspective view illustrating a conventional roof opening type container. As can be readily seen from FIG. 3, the conventional roof opening type container has a container body 101 which has a box-shaped configuration. A pair of roof doors 102 are provided to an upper end of the container body 101 in a manner such that they can be opened and closed. The pair of roof doors 102 are manually opened and closed by the medium of manipulation of a handle 103 which is arranged at a front end of the container body 101. When the pair of roof doors 102 are opened and closed by the medium of the manipulation of the handle 103, a reduction gear 105 which is disposed so as to reduce an opening and closing velocity of the pair of roof doors 102, is actuated by continuous rotation of the handle 103. The reduction gear 105 transfers power which is generated by the rotation of the handle 103, through a first chain 104 and a second chain 106 to a pair of gear boxes 112, so that a velocity is reduced.
  • The pair of gear boxes 112 respectively rotate a pair of driving shafts 109 which extend in a forward and rearward direction at both sides of the container body 101. Each roof door 102 is secured at one widthwise end thereof to each driving shaft 109. The pair of roof doors 102 are rotated about the pair of driving shafts 109 by the medium of rotation of the pair of driving shafts 109 in a manner such that they open or close the upper end of the container body 101.
  • However, the conventional roof opening type container constructed as mentioned above suffers from defects in that, since power for opening and closing the pair of roof doors 102 is transferred from the handle 103 through the reduction gear 105, the first and second chains 104 and 106 and the pair of driving shafts 109 to the pair of roof doors 102, when the pair of roof doors 102 are initially opened or closed, a great deal of effort is required, and thereby the opening and closing velocity of the pair of roof doors 102 cannot but be slowed. For example, in order to open or close the pair of roof doors 102 through 270°, while being influenced by a diameter of sprockets which are connected with the first and second chains 104 and 106, the handle 103 must be rotated by about fifty-three revolutions.
  • Also, when the pair of roof doors 102 are opened and closed, as the center of gravity of each roof door 102 continuously moves, a play is developed in each of the first and second chains 104 and 106, whereby durability of the entire container can be impaired. Moreover, because a sudden roof door sagging phenomenon may be induced due to a self-weight of each roof door 2, the likelihood of an accident to occur is increased.
    • SUMMARY OF THE INVENTION
  • Accordingly, the present invention has been made in an effort to solve the problems occurring in the related art, and an object of the present invention is to provide a roof door opening and closing device for a roof opening type container, which enables a pair of roof doors to be easily and quickly opened and closed, improves safety upon opening and closing of the roof doors, and enhances durability of the roof doors.
  • In order to achieve the above object, according to one aspect of the present invention, there is provided a roof door opening and closing device for a roof opening type container, comprising: a pair of roof doors provided to an upper end of a container body which has a box-shaped configuration, in a manner such that the pair of roof doors can open and close the upper end of the container body; a pair of first links having one ends which are pivotably connected to a pair of driving shafts respectively arranged at both sides of the container body and the other ends which are pivotably connected to the pair of roof doors; a pair of second links having one ends which are pivotably connected to two pairs of brackets each pair secured to the upper end of the container body between the pair of driving shafts and the other ends which are pivotably connected to the pair of roof doors; a reduction gear for velocity-reducing rotation force of a handle which is installed on the container body; a link mechanism for transferring the rotation force which is velocity-reduced by the reduction gear, to the pair of driving shafts which are respectively coupled with the pair of roof doors; and a plurality of springs installed on the pair of driving shafts and the two pairs of brackets in a manner such that spring force acts on the pair of driving shafts and the pair of second links when the pair of roof doors are completely opened or closed.
  • According to another aspect of the present invention, the link mechanism comprises a first chain which is located between the handle and the reduction gear so as to transfer the rotation force of the handle to the reduction gear, a second chain which is located between the reduction gear and the pair of driving shafts so as to transfer the rotation force velocity-reduced by the reduction gear, to the pair of driving shafts, and a pair of connection shafts which respectively connect the pair of driving shafts to the second chain.
  • According to still another aspect of the present invention, each of the pair of connection shafts and each of the pair of driving shafts are connected with each other by virtue of a pair of gears.
  • According to yet still another aspect of the present invention, the plurality of springs are installed on the pair of driving shafts and the two pairs of brackets in a manner such that the plurality of springs are freed and thereby the spring force does not act on the pair of driving shafts and the pair of second links when the pair of roof doors are opened by 270°.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The above objects, and other features and advantages of the present invention will become more apparent after a reading of the following detailed description when taken in conjunction with the drawings, in which:
  • FIG. 1 is a perspective view schematically illustrating an opening and closing structure for a roof door of a roof opening type container in accordance with an embodiment of the present invention;
  • FIG. 2 is an enlarged perspective view for the II part of FIG. 1; and
  • FIG. 3 is a schematic perspective view illustrating a conventional roof opening type container.
    • DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
  • Reference will now be made in greater detail to a preferred embodiment of the invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings and the description to refer to the same or like parts.
  • FIG. 1 is a perspective view schematically illustrating an opening and closing structure for a roof door of a roof opening type container in accordance with an embodiment of the present invention. As shown in FIG. 1, the roof opening type container has a container body 1 which has a box-shaped configuration. A pair of roof doors 2a and 2b cooperatively define a roof of the container body 1. The pair of roof doors 2a and 2b are opened and closed by rotating manipulation of a handle 3 which is arranged at a side of a front end of the container body 1. A first chain 4 which extends in a vertical direction, is connected to the handle 3. The first chain 4 is also connected with a first gear 7a which is provided at a front end of a connection shaft 7 which is positioned at an upper end of the container body 1. As can be readily seen from FIG. 2, on the front end of the connection shaft 7, there are installed the first gear 7a to which the first chain 4 is connected and a second gear 7b which has a larger diameter than the first gear 7a. The first gear 7a and the second gear 7b constitute a reduction gear 5 which functions to reduce a rotational velocity of the handle 3 and then transfer reduced rotational velocity to the connection shaft 7.
  • Therefore, the first chain 4 is connected with the reduction gear 5 and thereby connected to a first driving shaft 9a which functions to drive a first roof door 2a. The connection shaft 7 transfers rotation force of the handle 3 through a second chain 6 which is installed on the second gear 7b, to a second driving shaft 9b which functions to drive a second roof door 2b. As best shown in FIG. 2, the connection shaft 7 and the pair of driving shafts 9a and 9b are connected with each other through a first gear 12a which is installed on the connection shaft 7 and a second gear 12b which is installed on each of the pair of driving shafts 9a and 9b. This is because the pair of roof doors 2a and 2b are opened and closed in opposite directions from each other. Also, the driving shaft 9a or 9b which is provided to any one of the pair of roof doors 2a and 2b, can be directly connected to the connection shaft 7.
  • As described above, the reduction gear 5 includes the first gear 7a which is connected with the first chain 4 and the second gear 7b on which the second chain 6 connected to the driving shafts 9a and 9b so as to transfer power of the handle 3 to the driving shafts 9a and 9b is installed. Since the first gear 7a is smaller than the second gear 7b, the driving shafts 9a and 9b are rotated at a velocity which is slower than that of the connection shaft 7.
  • A first link 10 is fixedly installed on each of the driving shafts 9a and 9b. That is to say, one ends of a pair of first links 10 are pivotably connected to the pair of driving shafts 9a and 9b, respectively, and the other ends of the pair of first links 10 are pivotably connected to middle portions of the pair of roof doors 2a and 2b, respectively. Further, the roof doors 2a and 2b are, as shown in FIG. 2, connected to an upper surface of the container body 1 through a pair of second links 11. That is to say, one end of each second link 11 is pivotably connected to a pair of brackets 14 which are secured to the upper surface of the container body 1 between the pair of driving shafts 9a and 9b, and the other end of each second link 11 is pivotably connected to each of the pair of roof doors 2a and 2b.
  • Springs 8 which are installed on the pair of driving shafts 9a and 9b as shown in FIG. 2 and springs (not shown) which are installed on the brackets 14, act spring force on the first and second links 10 and 11. These springs are installed on the driving shafts 9a and 9b and the brackets 14 in a manner such that the springs are freed, that is, spring force of the springs does not act in any directions when the pair of roof doors 2a and 2b are opened by about 270°. Accordingly, when the pair of roof doors 2a and 2b are completely opened or closed, spring force of the springs acts on the driving shafts 9a and 9b and the brackets 14 in directions in which the pair of roof doors 2a and 2b are to be opened or closed.
  • Accordingly, in a state wherein the pair of roof doors 2a and 2b are completely opened or closed, when the handle 3 is rotated so as to open or close the pair of roof doors 2a and 2b, as the spring force of the springs which are installed on the driving shafts 9a and 9b and the brackets 14, acts on the first and second links 10 and 11 in the directions in which the pair of roof doors 2a and 2b are opened or closed, force which is required for opening and closing the pair of roof doors 2a and 2b, can be effectively decreased.
  • By the fact that the roof door opening and closing device for a roof opening type container according to the present invention is constructed as mentioned above, if the handle 3 is rotated in a left or right direction, rotation force of the handle 3 is transferred to the connection shaft 7 through the first chain 4. By this, the second chain 6 which is connected to the second gear 7b which is installed on the connection shaft 7, is driven. As described above, the connection shaft 7 is connected to the reduction gear 5 which is connected with the first driving shaft 9a, and the second chain 6 is connected to the second driving shaft 9b. Thus, the pair of driving shafts 9a and 9b are rotated by the rotation of the handle 3 so that they open or close the pair of roof doors 2a and 2b.
  • As described above, the pair of roof doors 2a and 2b are connected to the driving shafts 9a and 9b and the upper surface of the container body 1 through the first and second links 10 and 11. By the fact that one ends of the first links 10 are pivotally connected to the pair of driving shafts 9a and 9b and the other ends of the first links 10 are pivotably connected to the middle portions of the pair of roof doors 2a and 2b, the pair of roof doors 2a and 2b are raised upward by rotation of the driving shafts 9a and 9b. At this time, the second links 11 which have one ends pivotably connected to the two pairs of brackets 14 and the other ends pivotably connected to the pair of roof doors 2a and 2b, are pivoted about the brackets 14 by rotational movement of the roof doors 2a and 2b.
  • At this time, the pair of roof doors 2a and 2b can be easily opened or closed by the aid of the springs which are mounted to the driving shafts 9a and 9b and the brackets 14. After the pair of roof doors 2a and 2b are opened to a predetermined height, as the pair of roof doors 2a and 2b are lowered by their self-weight, the pair of roof doors 2a and 2b are completely opened or closed. As a consequence, due to the fact that the springs which are installed on the driving shafts 9a and 9b and the brackets 14, acts on the first and second links 10 and 11, force which is required for opening or closing the roof doors 2a and 2b, can be minimized.
  • As a result, the roof door opening and closing device for a roof opening type container according to the present invention, constructed as aforementioned above, provides advantages in that, since opening and closing of a pair of roof doors is aided by spring force, it is possible to easily and quickly open and close the pair of roof doors. Also, due to the fact that it is possible to prevent a play from being developed in a chain due to continuous movement of the center of gravity in each roof door, durability of the entire roof door opening and closing device can be enhanced. Further, because a sudden roof door sagging phenomenon due to a self-weight of each roof door can be avoided, the likelihood of an accident to occur is decreased.
  • In the drawings and specification, there have been disclosed typical preferred embodiments of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being set forth in the following claims.

Claims (4)

  1. A roof door opening and closing device for a roof opening type container, comprising:
    a pair of roof doors provided to an upper end of a container body which has a box-shaped configuration, in a manner such that the pair of roof doors can open and close the upper end of the container body;
    a pair of first links having one ends which are pivotably connected to a pair of driving shafts respectively arranged at both sides of the container body and the other ends which are pivotably connected to the pair of roof doors;
    a pair of second links having one ends which are pivotably connected to two pairs of brackets each pair secured to the upper end of the container body between the pair of driving shafts and the other ends which are pivotably connected to the pair of roof doors;
    a reduction gear for velocity-reducing rotation force of a handle which is installed on the container body;
    a link mechanism for transferring the rotation force which is velocity-reduced by the reduction gear, to the pair of driving shafts which are respectively coupled with the pair of roof doors; and
    a plurality of springs installed on the pair of driving shafts and the two pairs of brackets in a manner such that spring force acts on the pair of driving shafts and the pair of second links when the pair of roof doors are completely opened or closed.
  2. The roof door opening and closing device as claimed in claim 1, wherein the link mechanism comprises a first chain which is located between the handle and the reduction gear so as to transfer the rotation force of the handle to the reduction gear, a second chain which is located between the reduction gear and the pair of driving shafts so as to transfer the rotation force velocity-reduced by the reduction gear, to the pair of driving shafts, and a pair of connection shafts which respectively connect the pair of driving shafts to the second chain.
  3. The roof door opening and closing device as claimed in claim 2, wherein each of the pair of connection shafts and each of the pair of driving shafts are connected with each other by virtue of a pair of gears.
  4. The roof door opening and closing device as claimed in claim 1, wherein the plurality of springs are installed on the pair of driving shafts and the two pairs of brackets in a manner such that the plurality of springs are freed and thereby the spring force does not act on the pair of driving shafts and the pair of second links when the pair of roof doors are opened by 270° .
EP01109693A 2000-07-18 2001-04-19 Roof door opening and closing device for roof opening type container Withdrawn EP1174368A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2000041106 2000-07-18
KR10-2000-0041106A KR100373261B1 (en) 2000-07-18 2000-07-18 Roof Door Opening and Shutting Apparatus of Container With Roof Opening Type

Publications (1)

Publication Number Publication Date
EP1174368A2 true EP1174368A2 (en) 2002-01-23

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EP01109693A Withdrawn EP1174368A2 (en) 2000-07-18 2001-04-19 Roof door opening and closing device for roof opening type container

Country Status (5)

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US (1) US6402223B2 (en)
EP (1) EP1174368A2 (en)
JP (1) JP2002038815A (en)
KR (1) KR100373261B1 (en)
CN (1) CN1222453C (en)

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CN102295120A (en) * 2010-06-22 2011-12-28 北京银都淼森科技有限公司 Multifunctional airtight dustbin and movement device thereof
EP2746715A3 (en) * 2012-12-22 2016-07-20 Diehl BGT Defence GmbH & Co.KG Container for missile
EP2746715B1 (en) 2012-12-22 2017-09-06 Diehl Defence GmbH & Co. KG Container for missile
EP2746715B2 (en) † 2012-12-22 2020-08-12 Diehl Defence GmbH & Co. KG Container for missile
FR3017378A1 (en) * 2014-02-11 2015-08-14 Nexter Systems OPENING DEVICE FOR SAFE
CN113202369A (en) * 2021-04-26 2021-08-03 韶关格美机械有限公司 Switch device

Also Published As

Publication number Publication date
KR100373261B1 (en) 2003-02-25
CN1222453C (en) 2005-10-12
US20020008403A1 (en) 2002-01-24
KR20020007702A (en) 2002-01-29
US6402223B2 (en) 2002-06-11
CN1334226A (en) 2002-02-06
JP2002038815A (en) 2002-02-06

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